Improved mechanism for raising and lowering- boards



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CHENEY -KILBUEN AND ARTEMAS KILBUEN, or PHILADELPHIA,PENNsYLVAmA7 AssIcNons To HALE, GooDMAN a co., oF SAME PLACE.

Letters Patent N 98,167, dated .December 21, 1869.

IMPRovED MECHANISM ron RAISINGAND Lowname BOARDS.

The Schedule referred to these` Letters Patent and making part ofthe same.

Netlife and Object of the'lncentz'on. v i

Our invention relates to'mechanism for raising andlowering boards, dto., in warehouses, sheds, and else,- where; and

Our invention consists- First, ot' two vertically-traversing chains, Ahaving cer Y tain projections, in combination with strips and boards, or their equivalents, the whole beingso arranged andoperating that the boards resting edgewise on the projections. ofthe chains, may be thereby raised or lowvered in, and guided by spaces abrded bythe said strips:

Second, of certain safety drivinggear, described hereafter, in combination with the said endless chains Third, of certain inclined planes for directing thel elevated boards on to the floor after leaving the machine; 7

Fourth, ot' certain curved projections for directing the elevated boards from the machine on to the said inclined planes; Fifth, of certain arms which can be so adjusted as to direct the boards lowered bythe machine on to the floor; and

Sixth, of certain arms which ca nl be so adjusted as to present ledges whereon the boards can be placed edgewise, prior to being caught by the projections of the chains, and elevated.

Description 0f the Accompanying Drawingv Figure 1 is an end elevation'of our machine t'orraising, rlower-ing, and delivering boards, d'c.;

Figure 2, a front view ot' the saine;

Figure 3, a vertical section on the line 1 2, iig. 2; Figure 4, a top view;

Figure 5, a perspective View, illustrating the lower portion ofthe machine; and

Figure (i, a perspective View, illustrating the upper portion ofthe machine.

General Description.

rllhe line A Vrepresents thc ceiling or under side of the rafters ot' a room, ot' which B is the floor; andthe line C represents the tloor ofthe room or cellar below.

To the rafters A A are secured two hangers, Dand D', carrying a shaft, E, on which is a worin-wheel, a, adapted to a worin o'n a driving-shaft, I), turning in hangers, F F, which are also secured to the rafters A, the shaft l) being furnished with asuitablc driving-pulley i'or receiving a belt.

Two chain -pnlleys, G and G, are secured to the 4shaft E, an endless chain, H, passing round the former pulley, and a like chain, H', round the latter pulley, the chaips also passing round similar pulleys on a,

shaft, I, which turns in standards J J, securedto the lower floor C.

Every other link of the two chains has a projection, e, or these projections may be otherwise so arranged on the chain, at such distances apart, that boards' of ordinary width can he admitted between them. 'I prefer, however, to make the links so long that there may be a projection on every other link.

a width that the greater portion of the projections e v of the links will extend beyond the edges ot' the said boards.

0n one side of 'each endless chainis vertical strip or shield, L, and there is a similar strip, L', on the opposite side, these strips being connected to the door B, or secured in any other suitable manuel', so that they shall occupy a position parallel with the chain and edges ot' the boards 'K and Kp, but so far from both that the boards to be hoisted can pass freely between them. (See fig. 1.) o The inside of each strip has a vertical groove, into which the projections c of the links-extend.

To each board K','near its upper end, is secured a strip or plate, f, on'each end of which there is a curved projection, h, best observed on referring to iig. 1, and below these projections are the upper ends i t' of the strips L and L. Enlarged communications, m infare thus left between thc projections h h and tops ot' the strips to the vertical spaces between the said strips and the boards K-and K'.

Inclincd strips, a a, extend from the tops of the strips L and L to the licor B, fora purpose described hereafter.

To each of tbc boards-.1goJ short distanceabove the door G, is hinged an arm, p, which can be elevated out ofthe way, as shown in iig. 5, ordepressed tothe floor, as shown (to the left) in fig. 1, thus presenting an inclined plane. n A similar arm is hinged to each of the boards K" so that the arm to the left may present an inclined planerwhile that to the right is elevatedas shown in 1i g. 1 or that tothe left may be elevated while that to the right is depressed.

To each of the boards K is hinged a small arm, q, which can be elevated out ofthe way, or depressed so It is the d nty of these endless chains to raise boards and lli.

Operation.

We will suppose the endless cha-in to be traversing in the direction ofthe arrows, iig. 1, and that it is desirable to elevate a number of boards on the lower door C, and to deliver them on the oor B above.

The arms 11 on the righthaving been turned up, and the'u arms q depressed, the attendant places a board edgewise on the ledges aiorded by the said arms q, and thcreleaves it, to fetch another board. In the mean time, the projections e on the chains catch the under side oi the i'rst board, elevate it, and introduce it into the space :v between the edges of' the boards K and K and the strip L'. The iirst board having been elevated out oi' the way, another board is placed on the arms q,

. and this is also elevated by projections e c on the chain.

llhns hoard after board is caught alnlriutroduccd into the space x, through which a succession of boards is constantly traversing upward.

\Vhen a board reaches the curved projection m above the floor B, its upper edge is turned outward, and itis finally thrown on to the inclined plane n, and thus delivered on `to the iioor B.

It may be necessary, however, to remove different boards from the door B while the chains are still in motion. In this case, an attendant stationed to the lc't ot' the machine, iig. 1, introduces board after board edgewise into the enlarged space m between the top of thostrip L and the projection h, an'd these boards resting on the descending projections c of the chains, are carried down with the latter, and finally delivered on to the inclined armsp, and on to the floor G. It will be thus seen that boards ot one class may be elerated, and those of another class lowered at the same time.

lhc movement of the chains may at anytime be re v versed, and that side ofthe machine on which the elevating had been conducted may be used for lowering, all that is necessary, prior to this reversing, being a proper adjustment oi' the arms p and q.

We have described the machine as being arranged for removing boards from one door to the. next, but it will he understood that the machine may be arranged for conveying boards through a number of floors oi' a warehouse or shed, or the ent-ire machine may be movable, and transferable from point to point of a lumheryard, with tbe view of facilitating the erection or re'- movai ot' piles ot'lnmber. l

Although we have alluded to K and K as boards, it will be evident that lightframes of metal `may be used in their place.

For the purpose of driving the endless chain, we prefer the worm and wormwheel described above, espe` cially the movement of the chains must be necessarily slow. This driving-gear, too, in addition to its simplicity, is seltllocking, as regards any tendency which the chains might have to run down ou the weighted side, should the driving-strap be broken, or escape from the pulley on the. driving-shaft B.

i Although we have described our invention `as applied to the moving ot' lumber only, it will be found `Aequally useful for raising and lowering plates of sheeti- Inetal, long iron rods, die.

Claims.

1. The vcrtically-traversing endless chains H and H', with their projections cc, in combination with the strips L and L', and boards K, or their equivalents;

2. 1n combination with the .above,v, tlre.shaft E, with its worm-wl-iecl tl, and the driving-shaft b, with its 'worm 3. The inclined planesn, extending from the tops ofthe strips L and L to the tloor, as described.

4. The curved projections h h above the tops of' the said strips.

5. The arms p p, arranged, in respect to the strips L and L', and endless chains, as set forth.

6. The arms q q, arranged, in respect to the said strips and chains, as specied.

1n testimony whereof', we have signed our names to this specification, in the Ypresence' of two subscribing witnesses.

CHENEY KILBURN. ARTEMAS KILBURN. Witnesses:

C. E. Bosman, Waals. STEEL, 

